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SIGMA 3 Survival School

SURVIVAL INSTRUCTORS

ROBERT ALLEN

Founder. Combat Veteran. 20 Year Survival Instructor

Specialties: Wilderness & Urban Survival, Wild Plants Expert, Tactical Skills

Experience: Having created the longest running survival instructor program in the US, Rob has a wide range of experience. Wilderness EMT qualified. Army Combat Veteran. And having trained more civilian survival instructors than anyone in the world, he can provide a wide base on knowledge on almost any subject related to survival, bushcraft, tactical skills, and more.

William Hunsaker

Lead Instructor

Experience: Will is a veteran U.S. Army infantryman, having served with prestigious units. Will has attended several survival schools including the Sigma 3 Instructor Course. He’s been the Lead Instructor at Sigma-3 Survival School for ten years. His courses blend hardcore wilderness skills with real-world survival tactics. Students rave about his passion and expertise. He’s taught thousands how to thrive in extreme conditions.

Joshua Hamlin

Primitive Skills Instructor

Experience: Primitive survival instructor. Josh lived two years in the wilderness off the land with no modern tools. Literally just the clothing on his back. Josh has lived this lifestyle almost non stop ever since that initial test. Later in his two year journey he added a tarp, sleeping bag, knife, pot and he continued to live in full survival for a decade. He is most certainly top 5 most experienced primitive survivalists in the US if not the world.

Nicholas Donzello

Director of Veteran Operations

Experience: Veteran of the U.S. Army and Federal Bureau of Prisons at the Supermax facility in Colorado, he serves as Chief of Veteran Operations, helping VETS apply benefits for our programs. With over 25 years of dirt time and a proud student of the Sigma 3 Instructor Course, he brings real-world resilience, passion and tactical expertise to training others in extreme survival and high-stress environments.